动物营养学报2018，Vol.30Issue(2)：589-596,8.DOI:10.3969/j.issn.1006-267x.2018.02.023
短期试验条件下不同硒源对泌乳奶牛血浆和乳中硒含量及血清抗氧化能力的影响
Effects of Different Selenium Sources on Selenium Content in Plasma and Milk, and Serum Antioxidant Capacity of Lactating Dairy Cows under Short-Term Trial Conditions
摘要
Abstract
The objective of this trial was to compare the effects of 2-hydroxy-4-methylselenobutanoic acid (HMSeBA) and sodium selenite (SS) on selenium content in plasma and milk,and serum antioxidant capacity of lactating dairy cows under short-term trail conditions.Eight Holstein dairy cows,similarly in parity,days in milk and milk yield,were randomly assigned to 1 of 2 groups with 4 cows per group according to a completely randomized design,and 0.3 mg/kg DM HMSeBA and SS were supplemented in diets in different groups,respectively.The pre-trial lasted for 2 weeks and the trial lasted 4 weeks.The results showed as follows:1) milk fat percentage (P =0.060 3) and milk fat yield (P =0.055 2) of dairy cows in HMSeBA group tended to be higher than those in SS group,and dry matter intake,milk yield and other milk compositions were not significantly affected by selenium sources (P＞ 0.05);2) selenium content in plasma and milk of dairy cows in HMSeBA group were significantly higher than those in SS group (P＜0.05);3) serum glutathione peroxidase activity was not significantly affected by selenium sources (P＞0.05),however,serum total antioxidant capacity and superoxide dismutase activity in HMSeBA group were significantly higher than those in SS group (P＜0.05),and serum malondialdehyde content was significantly decreased (P＜0.05).In conclusion,under short-term trail conditions,dietary supplemented with 0.3 mg/kg DM HMSeBA significantly increases selenium content in plasma and milk,and serum antioxidant capacity compared with the supplementation of the same level of SS.关键词
蛋氨酸硒羟基类似物/亚硒酸钠/奶牛/乳中硒含量/血清抗氧化能力Key words
2-hydroxy-4-methylselenobutanoic acid/sodium selenite/dairy cow/selenium content in milk/serum antioxidant capacity分类
农业科技引用本文复制引用
孙玲玲,王坤,高胜涛,刘士杰,卜登攀..短期试验条件下不同硒源对泌乳奶牛血浆和乳中硒含量及血清抗氧化能力的影响[J].动物营养学报,2018,30(2):589-596,8.基金项目
中国农业科学院科技创新工程协同创新任务(ASTIP-IAS07,CAAS-XTCX2016011-01) （ASTIP-IAS07,CAAS-XTCX2016011-01）
北京市奶牛产业创新团队(BAIC06-2017) （BAIC06-2017）
农产品质量安全监管(饲料)项目 （饲料）
